DRINKING WATER

GettyImages-2150206637 chlorine Your Chlorine Sensor Is Lying to You — Here's 65 Days Of Proof

The operators at Compton Durville Water Treatment Works thought their chlorine dosing was under control. Their Siemens Depolox membrane sensor showed residuals right at setpoint. The PID loop was doing its job. On paper, everything looked fine. It wasn't. 

DRINKING WATER CASE STUDIES AND WHITE PAPERS

  • Condition Assessment Tool Provides Southern California With A Proactive Asset Management Plan

    Read about a non-invasive and non-intrusive technology that enables rapid inspection of large areas of a water distribution network without removing the pipelines from service, avoiding service interruptions, pipeline dewatering/cleaning, or costly excavations.

  • The Chemistry Of A Bloom: What Water Tests Reveal About Toxic Algae

    Understanding the chemistry behind algal blooms is key to early detection, effective monitoring, and mitigating their impacts. Fortunately, water testing technologies are revealing powerful insights into what’s really happening below the surface. 

  • Speedy Repair Or Replacement Of Curb Boxes Damaged By Acidic Soil

    For municipal waterworks supervisors, keeping curb boxes in good working order is critical.  But this job can become even more complicated by the prevalence of acidic soils across the U.S., which accelerates corrosion along with costly repair and replacement.

  • Insta-Valve 250 Provides Targeted Control Without System Shutdown

    Hydra-Stop’s solution allowed targeted control for planned maintenance and repair. MDC is a water utility that serves a densely populated region of Connecticut that also has a significant amount of commercial and industrial facilities. Like so many water utilities within the U.S., MDC has a century-old infrastructure which requires a proactive and preventative maintenance approach.

  • Maximizing Speed And Accuracy In Microbiological Testing

    A quality outcome is only as reliable as the components and processes used to create and test it. When it comes to municipal drinking water, food, beverages, wastewater effluent, and other industrial applications, having reliable microbiological testing reference materials to benchmark quality control (QC) processes is essential. Here are some important points to consider when establishing or managing QC programs.

  • $0 CAPEX Model Aids Innovation In Changing Water Environments

    Managers of industrial, municipal, and agricultural water quality or water use monitoring can attest to the challenges of balancing depth of detail against the costs of achieving it. Now, an Infrastructure-as-a-Service (IaaS) business model is rewriting the economic impacts of those challenges by repackaging water monitoring capabilities to meet evolving needs more efficiently.

  • ABB Flowmeters Help Keep Macallan Whisky At Its Peak

    Accurate measurement delivered by a range of ABB flowmeters is helping the company behind the world-renowned Macallan whisky brand to maintain its high product quality standards following its move to its new 187.2M USD distillery.   

  • Borough Of Ramsey - Case Study - PFAS and Arsenic Removal

    Learn how AdEdge water treatment experts took on the challenge of incorporating PFAS treatment into containerized designs that were already in progress. 

  • From Challenge & Prize Competition To Test Prototype: The Nitrogen Sensor That Could Change Residential Onsite Wastewater Treatment

    More than one in five households in the United States depend on septic or onsite systems to treat their wastewater. These systems provide critical water quality infrastructure, but they usually are not designed to remove nitrogen to the point that sufficiently protects coastal marine ecosystems. As a result, septic systems are known to contribute to eutrophication (excess nutrients), hypoxia (low levels of oxygen), and harmful algal blooms in marine and estuarine waters.

  • Empowering Water Utilities Through Meter Data

    Modernizing water infrastructure requires robust digital systems to manage high-volume metering data. Centralizing this information enables precise leak detection, accurate water balancing, and proactive customer engagement, ultimately driving operational efficiency and long-term sustainability goals.

DRINKING WATER APPLICATION NOTES

  • Waste Technologies Transform Problems To Profit
    9/8/2015

    Anaerobic digestion processes that radically improve the quality of wastewater while delivering green energy extracted from biological waste streams are emerging as a profitable way for agricultural and food processing industries cope with the twin impact of drought and pollution challenges.

  • Active Energy Control – Energy Reductions Of Up To 10% Above Standard Drives
    4/1/2017

    Energy costs continue to increase. At the same time, there is increased pressure to reduce utility bills without sacrificing operations or comfort.

  • Solution For Algae Blooms
    12/17/2015

    Harmsco® Filtration Products is pleased to offer a solution to the ever increasing blue-algae blooms in water sources. A multi-barrier approach is necessary to physically remove intact (algae and cyanobacteria) before they rupture in the treatment process and then remove extracellular cyanobacteria through adsorption.

  • Circuit Board Cleanliness Testing
    10/29/2021

    Contamination of circuit boards can bring about severe degradation of insulation resistance and dielectric strength. Cleanliness of completed circuit boards is, therefore, of vital interest. For those companies who have established circuit board cleaning procedures, the MIL Spec P-28809 has been used as a guideline for control. Now a simple "on line" test for the relative measurement of ionic contamination has been developed.

  • Ultrapure Water For Determination of Toxic Elements In Environmental Analyses
    4/10/2018

    In this paper the importance of reagent water quality for toxic element environmental analyses is discussed, and the suitability of fresh ultrapure water produced using MilliporeSigma water purification systems for ICP-OES and ICP-MS trace element analyses in environmental laboratories is demonstrated.

  • The Role Of Zeta Potential In Water Treatment Process Control
    5/27/2020

    Physical processes such as sedimentation, flotation and filtration remain at the heart of most process trains for the treatment of water and wastewater flows.

  • Background And Summary Of Tests For The 2000PV Restraint
    4/13/2021

    The 2000PV is a restraint for PVC pipe and the standardized mechanical joint. This product is the result of years of testing and evaluation and its performance has been proven by thousands of hours of proof tests, as well as third-party evaluations. This report describes the 2000PV through the 12" size.

  • LC-MS Analysis Of PFAS Compounds In EPA 533 After Supelclean™ ENVI-WAX SPE Cleanup
    8/29/2022

    This application note demonstrates the extraction and subsequent analysis of 25 related analytes from water using Supelco SPE cartridges.

  • A Comparative Study Of On-Line And Laboratory TOC Analyzers For Analysis Of Raw And Finished Drinking Water
    4/5/2013

    Total organic carbon (TOC) analysis is an important indicator of water quality throughout the drinking water treatment process. Raw source water is progressively treated in chemical coagulation, flocculation, sedimentation, and filtration steps to remove particulate matter and natural organic matter (NOM).

  • Organics Aren't Invisible: A Guide for Simple Online Monitoring
    5/13/2019

    Control of dissolved organics has been one of the highest priority concerns for most water treatment plants for over 20 years. Organics monitoring is an even more critical issue today in the face of more stringent regulations and concerns around trace organics, emerging contaminants, and even counter-terrorism or water security. Despite the critical need, many plants still rely primarily on turbidity for monitoring and process control.

DRINKING WATER PRODUCTS

CHEM-FEED® Engineered Skid Systems are now shipping! These Skid Systems are simple to operate, easy to order, and includes everything needed for precise chemical feed.

Aqua-Aerobic® Membrane Systems featuring NO BREAK Aqua MultiBore® membranes are designed to effectively remove suspended solids, particulate phosphorus, bacteria, cysts and other harmful impurities, resulting in safe, high quality water

The SoundPrint® AFO Continuous Remote Monitoring Platform is a proactive pipeline monitoring solution that uses acoustic fiber optic (AFO) technology to detect structural deterioration in prestressed concrete cylinder pipelines (PCCP). By continuously listening for wire breaks and other anomalies, the system enables utilities to assess pipeline health in real time, reducing the risk of catastrophic failures and extending asset life. Data is securely transmitted to a cloud-based dashboard, providing operators with actionable insights for maintenance and capital planning.

iPERL+ redefines water metering, offering an integrated solution that not only ensures seamless system compatibility but also maintains unmatched accuracy in water usage measurement for your utility. With enhanced data logging capabilities and a choice between polymer and metal flow tube casings, iPERL+ is tailored to meet the unique needs of your utility.

The Series 1420 CHLOR-A-VAC® affords high efficiency addition and mixing of gases and liquid chemicals resulting in substantial chemical cost savings.

Many owners and installers prefer the strength and simplicity of HDSS Pipe and Fittings. The joint is integrally restrained which gives it four advantages:

LATEST INSIGHTS ON DRINKING WATER

DRINKING WATER VIDEOS

"Wastewater Dan” talks with FOX 4 News Kansas City about drought conditions in California and procedures to conserve water in the home. He also demonstrates the use of a total dissolved solids (TDS) meter to test drinking water quality, and interprets the results.

Did you know satellites can measure Earth’s oceans from space? The Jason-3 satellite, set to launch in July 2015, will collect critical sea surface height data, adding to a satellite data record going back to 1992.

In this episode of The Water Online Show: On Location, our guest is Mike Blackburn from Hach. Mike dives into the benefits of panel-mounted solutions for water quality monitoring.

GE partnered with the Wharton School's Initiative for Global Environmental Leadership (IGEL) for an industry leaders' discussion about the energy/water nexus in unconventional oil & gas production.

In the water-scarce desert Southwest, the agricultural, urban and environmental sectors are constantly competing for limited water. So how do you handle the fact that each stakeholder within those sectors wants something different in a water management strategy, for now and for the future?

ABOUT DRINKING WATER

In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA)

Drinking water considerations can be divided into three core areas of concern:

  1. Source water for a community’s drinking water supply
  2. Drinking water treatment of source water
  3. Distribution of treated drinking water to consumers

Drinking Water Sources

Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater. 

Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.

Drinking Water Treatment

Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.

There are a variety of technologies and processes that can be used for contaminant removal and the removal of pathogens to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.

The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.

The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.

During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.

Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.

Drinking Water Distribution

Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.

A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.

Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.